National boilers, radiators, and specialties: catalog no. 26 (1920)
National Radiator Company · National Radiator Company · leaf 91
culation The accompanying cuts give a good idea of this fitting andits adaptability in controlling thecirculation in a hot water heatingsystem. The advantages of ad-justment provide a variation incirculation which can be accom-plished when the system is in oper-ation. This device is a fitting,… … Sufficient clearance area is allowed to by-pass the deflectorand fill the other branch. Radiators can not reversewhen the Deflector inletfaces the boiler in the flowand return. Maximum deflection is es-sential on rising lines, andwhere a riser is taken off theend of a main near a firstfloor…
